earwig

The idea was probably strengthened by the earwig′s appearance, with a sharp, pincer-like appendage extending to the rear. However, earwigs are herbivores, and they are no more likely to enter an ear than are ants, bees, flies, or any other small insect. Even when earwigs do occasionally find their way into human ears, they cannot burrow their way through the skin and into the brain.

That gawdy earwig, or my lord your patron, Whose pensioner you are.